tidy-up: spelling

C89, Schannel, Secure Transport, contractions.

Cherry-picked from #14692
Closes #14996

lib/curl_setup.h

@@ -45,8 +45,8 @@
 
 /* Workaround for Homebrew gcc 12.4.0, 13.3.0, 14.1.0 and newer (as of 14.1.0)
    that started advertising the `availability` attribute, which then gets used
-   by Apple SDK, but, in a way incompatible with gcc, resulting in a misc
-   errors inside SDK headers, e.g.:
+   by Apple SDK, but, in a way incompatible with gcc, resulting in misc errors
+   inside SDK headers, e.g.:
      error: attributes should be specified before the declarator in a function
             definition
      error: expected ',' or '}' before

lib/curl_sha512_256.c

@@ -34,7 +34,7 @@
  * * GnuTLS
  * * wolfSSL
  * * Schannel SSPI
- * * SecureTransport (Darwin)
+ * * Secure Transport (Darwin)
  * * mbedTLS
  * * BearSSL
  * * Rustls

lib/url.c

@@ -426,9 +426,9 @@ CURLcode Curl_init_userdefined(struct Curl_easy *data)
 
   /* Set the default CA cert bundle/path detected/specified at build time.
    *
-   * If Schannel or SecureTransport is the selected SSL backend then these
-   * locations are ignored. We allow setting CA location for schannel and
-   * securetransport when explicitly specified by the user via
+   * If Schannel or Secure Transport is the selected SSL backend then these
+   * locations are ignored. We allow setting CA location for Schannel and
+   * Secure Transport when explicitly specified by the user via
    *  CURLOPT_CAINFO / --cacert.
    */
   if(Curl_ssl_backend() != CURLSSLBACKEND_SCHANNEL &&

lib/vtls/sectransp.c

@@ -24,7 +24,7 @@
  ***************************************************************************/
 
 /*
- * Source file for all iOS and macOS SecureTransport-specific code for the
+ * Source file for all iOS and macOS Secure Transport-specific code for the
  * TLS/SSL layer. No code but vtls.c should ever call or use these functions.
  */
 
@@ -197,7 +197,7 @@ static const uint16_t default_ciphers[] = {
   TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,      /* 0xCCA8 */
   TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,    /* 0xCCA9 */
 
-  /* TLSv1.3 is not supported by sectransp, but there is also other
+  /* TLSv1.3 is not supported by Secure Transport, but there is also other
    * code referencing TLSv1.3, like: kTLSProtocol13 ? */
   TLS_AES_128_GCM_SHA256,                           /* 0x1301 */
   TLS_AES_256_GCM_SHA384,                           /* 0x1302 */
@@ -1227,8 +1227,7 @@ static CURLcode sectransp_connect_step1(struct Curl_cfilter *cf,
      Mountain Lion.
      So we need to call SSLSetEnableCertVerify() on those older cats in order
      to disable certificate validation if the user turned that off.
-     (SecureTransport will always validate the certificate chain by
-     default.)
+     (Secure Transport always validates the certificate chain by default.)
   Note:
   Darwin 11.x.x is Lion (10.7)
   Darwin 12.x.x is Mountain Lion (10.8)
@@ -2463,7 +2462,7 @@ static CURLcode sectransp_shutdown(struct Curl_cfilter *cf,
     }
     else {
       /* We would like to read the close notify from the server using
-       * secure transport, however SSLRead() no longer works after we
+       * Secure Transport, however SSLRead() no longer works after we
        * sent the notify from our side. So, we just read from the
        * underlying filter and hope it will end. */
       nread = Curl_conn_cf_recv(cf->next, data, buf, sizeof(buf), &result);

lib/vtls/vtls_int.h

@@ -220,7 +220,7 @@ CURLcode Curl_ssl_set_sessionid(struct Curl_cfilter *cf,
 #include "gtls.h"           /* GnuTLS versions */
 #include "wolfssl.h"        /* wolfSSL versions */
 #include "schannel.h"       /* Schannel SSPI version */
-#include "sectransp.h"      /* SecureTransport (Darwin) version */
+#include "sectransp.h"      /* Secure Transport (Darwin) version */
 #include "mbedtls.h"        /* mbedTLS versions */
 #include "bearssl.h"        /* BearSSL versions */
 #include "rustls.h"         /* Rustls versions */